Wall panel



FIG. 1 is a front elevational view of a wall panel showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a right side elevational view thereof. 

The ornamental design for a wall panel, as shown. 